CN221017249U - Main screen feeding structure and combined cleaning screen - Google Patents

Abstract

The utility model provides a main screen feeding structure and a combined cleaning screen, wherein the main screen feeding structure is used for receiving undersize discharged by a primary screen part and discharging the undersize into the main screen part, and the main screen part comprises a plurality of screening layers which are distributed at intervals up and down; one side of the primary screening part is provided with a grain discharging port; the main screen feeding structure comprises a primary screen dripping plate and a feeding box; wherein, the primary screening dripping tray is arranged in the primary screening part in an up-down inclined way, the lower end of the primary screening dripping tray is provided with a blanking port, and the blanking port is used for sliding off screen offal to the screening layer of the top layer; the feeding box is arranged at the main screen part and is positioned below the grain discharging port, the top end of the feeding box is open and is in sealing connection with the grain discharging port, a plurality of feeding channels are arranged in the feeding box, and each feeding channel is respectively used for guiding undersize to enter each screening layer below the top layer. The main screen feeding structure provided by the utility model has high integration level and compact structure, and can reduce the volume of equipment.

Description

Main screen feeding structure and combined cleaning screen

Technical Field

The utility model belongs to the technical field of grain machinery, and particularly relates to a main screen feeding structure and a combined cleaning screen.

Background

The combined cleaning sieve is mainly used for removing impurities before grains enter a warehouse. The combined cleaning sieve mainly comprises a feeding part, a discharging part and a cleaning sieve part on the whole structure. The existing cleaning screen part is difficult to meet the requirement on the single body processing capability, the simplest and most common mode is to increase the number of complete machines of the combined cleaning screen to meet the requirement on the working efficiency, but the method can lead to the increase of equipment cost and occupied space, and the problem can not be fundamentally solved.

For the clearance sieve portion of current structure, the mode that promotes monomer clearance ability mainly has two kinds, increase the screen check area on one hand, and increase the screen check number of piles, because the screen check is sheet structure, the too big decline that can arouse structural strength of area, thereby lead to the screen check to damage the frequency and rise, be unfavorable for the long-time stable work requirement of clearance sieve portion, and if increase the screen check number of piles then need carry out independent feeding to every layer of screen check sieve, the layering feeding demand of combination clearance sieve in prior art is in the face of adopting a plurality of feed channels to the mode of each layer of screen check's feed end reinforced respectively, the integrated level is lower, the feed structure can occupy very big equipment volume usually, consequently, the present needs to improve the feed structure in order to promote equipment compactness.

Disclosure of utility model

The embodiment of the utility model provides a main screen feeding structure and a combined cleaning screen, which aim to solve the problems of low integration level and large occupied volume of the feeding structure of the traditional combined cleaning screen and improve the compactness of the feeding structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: in a first aspect, a main screen feed structure is provided for receiving undersize discharged from a primary screen section and discharging the undersize into a main screen section, the main screen section including a plurality of screen layers spaced vertically; one side of the primary screening part is provided with a grain discharging port; the main screen feeding structure comprises a primary screen dripping plate and a feeding box; the primary screening dripping tray is arranged in the primary screening part in an up-down inclined way and is used for receiving the undersize products and enabling the undersize products to slide towards the lower end of the primary screening dripping tray, the lower end of the primary screening dripping tray is provided with a blanking port, the blanking port is used for sliding the undersize products towards the screening layer of the top layer, and the area, at the side of the blanking port, of the lower end of the primary screening dripping tray is used for sliding the undersize products towards the grain discharge port; the feeding box is arranged at the main screen part and is positioned below the grain discharging port, the top end of the feeding box is open and is in sealing connection with the grain discharging port, a plurality of feeding channels are arranged in the feeding box, and each feeding channel is respectively used for guiding undersize to enter each screening layer below the top layer.

With reference to the first aspect, in one possible implementation manner, a plurality of L-shaped partition boards are provided in the feeding box, and an inner cavity of the feeding box is divided into a plurality of feeding channels based on each L-shaped partition board.

In some embodiments, the L-shaped partition includes a vertical partition surface and a horizontal partition surface, wherein the horizontal partition surface is inclined up and down, and the inclined lower end of the horizontal partition surface is flush with the feed end of the screening layer.

The top end of the feeding box is provided with a U-shaped interface, and the grain discharging port is formed by encircling an open side wall of the primary screening part and a half shell connected to the open side wall; the U-shaped interface is buckled on the half shell, and a first sealing strip is arranged between the U-shaped interface and the half shell.

For example, a second sealing strip is arranged between the feeding box and the side wall of the main screen part, and a third sealing strip is arranged between the feeding box and each screening layer.

With reference to the first aspect, in one possible implementation manner, one side of the feeding box is hinged with the frame of the main screen part, and the other side of the feeding box is detachably connected with the frame through a plurality of hanging components distributed vertically at intervals.

In some embodiments, the hitching assembly includes an adjustable tie rod and a hitching member; one end of the adjustable pull rod is hinged with the frame, and the other end of the adjustable pull rod is provided with a clamping hook; the hooking piece is arranged on the feeding box and is provided with a movable hanging ring which is suitable for being hooked with the clamping hook.

The hooking piece comprises a fixed seat, a pressing handle and a lock catch; the fixed seat is fixedly connected to the outer wall of the feeding box, and a clamping plate is arranged on the fixed seat; one end of the pressing handle is hinged with the fixed seat, the other end extends towards the direction away from the pull rod, and the middle part of the pressing handle is provided with a movable hanging ring; the lock catch is rotationally connected to the middle part of the pressing handle and is in hanging fit with the clamping plate.

In some embodiments, the primary screen portion has two discharge ports, and the main screen portion is provided with a feed box below both discharge ports.

The main screen feeding structure provided by the utility model has the beneficial effects that: compared with the prior art, the main screen feeding structure has the advantages that the blanking port is formed in the lower end of the primary screen dripping plate, part of screened matters passing through the primary screen can be leaked to the top screen layer of the main screen part, the screened matters sliding from the lower end edge of the primary screen dripping plate laterally from the blanking port enter the grain discharging port to fall into the feeding box, and the screened matters are respectively circulated to the screen layers below the top layer of the main screen part through the feeding channels in the feeding box, so that uniform feeding of each screen layer is realized; the feeding box is compact in structure and small in size as an integrated module, and meanwhile, the number of feeding channels in the feeding box can be reduced by arranging the blanking port on the primary screening dripping plate, so that the structure of the feeding box can be simplified, the equipment volume is further reduced, and the compactness of the whole machine structure is improved.

In a second aspect, embodiments of the present utility model also provide a combined cleaning screen, including the main screen feed structure described above. The combined cleaning sieve provided by the utility model has the same beneficial effects as the main sieve feeding structure, and is not repeated here.

Drawings

FIG. 1 is a schematic illustration of a main screen feed structure provided in an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic perspective view of a feed box according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a blank drop plate according to an embodiment of the present utility model;

FIG. 5 is a schematic view of one of the L-shaped separators according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a partial enlarged structure at B in FIG. 2;

FIG. 7 is a schematic view of a connection structure of a hitching assembly according to an embodiment of the present utility model;

Fig. 8 is a schematic perspective view of a hooking member according to an embodiment of the present utility model.

In the figure: 10. a primary screening part; 11. a grain discharging port; 12. a dripping tray is screened for the first time; 121. a blanking port; 13. a half shell; 20. a main screen section; 21. screening layers; 22. a frame; 30. a feed box; 301. a feed channel; 31. an L-shaped partition; 311. a vertical partition surface; 312. a transverse partition surface; 32. a U-shaped interface; 40. a first sealing strip; 50. a second sealing strip; 60. a third sealing strip; 70. a hitching assembly; 71. an adjustable tie rod; 711. a hook; 72. a hooking piece; 721. a movable hanging ring; 722. a fixing seat; 723. a clamping plate; 724. pressing a handle; 725. and (5) locking.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present utility model. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" or "a number" means two or more, unless specifically defined otherwise.

Referring to fig. 1 to 4, a main screen feeding structure provided by the present utility model will now be described. The main screen feeding structure is used for receiving undersize discharged by the primary screen part 10 and discharging the undersize into the main screen part 20, and the main screen part 20 comprises a plurality of screen layers 21 which are distributed at intervals up and down; one side of the primary screening part 10 is provided with a grain discharge port 11; the main screen feeding structure comprises a primary screen dripping plate and a feeding box 30; the primary screening dripping tray 12 is arranged in the primary screening part 10 in an up-down inclined way and is used for receiving the undersize products and enabling the undersize products to slide towards the lower end of the primary screening dripping tray, the lower end of the primary screening dripping tray 12 is provided with a blanking port 121, the blanking port 121 is used for sliding the undersize products towards the screening layer 21 on the top layer, and the area, located at the side of the blanking port 121, of the lower end of the primary screening dripping tray 12 is used for sliding the undersize products towards the grain discharge port 11; the feeding box 30 is arranged at the main screen part 20 and is positioned below the grain discharging port 11, the top end of the feeding box 30 is opened and is in sealing connection with the grain discharging port 11, a plurality of feeding channels 301 are arranged in the feeding box 30, and each feeding channel 301 is used for guiding undersize materials to enter each screening layer 21 below the top layer.

It should be noted that, during the screening process of the combined cleaning screen, the driving mechanism drives the complete machine to make a flat swing rotation motion, so that the materials on each screen plate of the primary screen portion 10 and the main screen portion 20 shake to realize screening, for the primary screen portion 10, the oversize is sundries with larger volume, and the undersize is grains and sundries with smaller volume, wherein the primary screen dripping tray 12 is arranged below the screen plate of the primary screen portion 10 and is used for receiving undersize, and during the screening process, the undersize slides along the inclined direction of the primary screen dripping tray 12; each screening layer 21 of the main screening part 20 generally comprises a top large impurity screen plate, a middle small impurity screen plate and a bottom small impurity tray, wherein the feeding of each screening layer 21 is to feed on the top large impurity screen plate, the oversize products obtained after screening by the large impurity screen plate are large impurities, the undersize products are grains and small impurities falling onto the middle small impurity screen plate, the undersize products of the middle small impurity screen plate are small impurities falling onto the bottom small impurity tray, and the oversize products are clean grains; it should be appreciated that the width of the blanking port 121 formed in the primary screen drop plate should be one-N times the width of the plate, and the width of each feed channel 301 in the feed box 30 should be one-N times the width of the primary screen drop plate, where N is the number of screen layers 21 of the main screen section 20, so as to ensure an even flow of undersize material into each screen layer 21.

Compared with the prior art, the main screen feeding structure provided by the embodiment has the advantages that the blanking port 121 is formed in the lower end of the primary screen dripping plate, part of the screened material passing through the primary screen can be leaked to the top screen layer 21 of the main screen part 20, the screened material sliding from the lower end edge of the primary screen dripping plate at the side of the blanking port 121 enters the grain discharging port 11 to fall into the feeding box 30, and the screened material flows to the screen layers 21 below the top layer of the main screen part 20 through the feeding channels 301 in the feeding box 30, so that uniform feeding of each screen layer 21 is realized; the feeding box 30 is compact in structure and small in size as an integrated module, and meanwhile, the number of the feeding channels 301 in the feeding box 30 can be reduced by arranging the blanking ports 121 on the primary screening dripping plate, so that the structure of the feeding box 30 can be simplified, the equipment volume is further reduced, and the compactness of the whole machine structure is improved.

In some embodiments, referring to fig. 2 and 3, a plurality of L-shaped baffles 31 are provided within the feed tank 30, and the interior cavity of the feed tank 30 is divided into a plurality of feed channels 301 based on the respective L-shaped baffles 31. Simple and compact structure and even material distribution.

Specifically, the L-shaped partition 31 includes a vertical partition surface 311 and a horizontal partition surface 312, wherein the horizontal partition surface 312 is inclined up and down, and the inclined lower end of the horizontal partition surface 312 is flush with the feeding end of the screening layer 21. The upper ports of the feeding boxes 30 are evenly divided by the vertical partition surfaces 311 of the L-shaped partition plates 31, and then the vertical partition surfaces 312 which are obliquely arranged are respectively in flush butt joint with the feeding ends of the screening layers 21, so that uniform feeding to the screening layers 21 is realized, the structure is simple and compact, and the feeding process is smooth.

In some possible implementations, referring to fig. 2, 3 and 5, the top end of the feeding box 30 is provided with a U-shaped interface 32, and the grain discharging port 11 is formed by enclosing an open side wall of the primary screening portion 10 and a half shell 13 connected to the open side wall; the U-shaped interface 32 is buckled on the half shell 13, and a first sealing strip 40 is arranged between the U-shaped interface 32 and the half shell 13. Through setting up U type interface 32 can form grafting withhold the cooperation with the ejection of compact half shell 13 of prescreening portion 10, set up first sealing strip 40 between the two simultaneously, guarantee the connection leakproofness between feeding case 30 and the grain discharge mouth 11, avoid leaking the material.

In some embodiments, as shown in fig. 3, a second seal 50 is provided between the feed box 30 and the side wall of the main screen section 20, and a third seal 60 is provided between the feed box 30 and each screen layer 21. The second sealing strip 50 is utilized to improve the connection tightness between the feeding box 30 and the main screen part 20, so that the outward leakage is avoided, and the third sealing strip 60 is arranged to improve the connection tightness between each feeding channel 301 of the feeding box 30 and the corresponding screening layer 21, so that the isolation between the adjacent screening layers 21 is realized, and the interlayer leakage is avoided.

In some embodiments, the feeding box 30 is connected to the main screen portion 20 in a manner as shown in fig. 7, one side of the feeding box 30 is hinged to the frame 22 of the main screen portion 20, and the other side is detachably connected to the frame 22 through a plurality of hanging assemblies 70 which are vertically spaced apart. One side of the feed bin 30 is disconnected from the frame 22 by operating the hitching assembly 70, so that the feed bin 30 can be opened with the hinged side of the feed bin 30 as an axis, and then each feed channel 301 and each screening layer 21 can be exposed, facilitating maintenance and cleaning of the feed bin 30 and the main screen portion 20.

Specifically, referring to fig. 7 and 8, an optional structure of the hooking component 70 in this embodiment is that the hooking component 70 includes an adjustable pull rod 71 and a hooking member 72; wherein one end of the adjustable pull rod 71 is hinged with the frame 22, and the other end is provided with a clamping hook 711; the hooking member 72 is disposed on the feeding box 30 and has a movable hanging ring 721 adapted to be hooked with the hook 711. The adjustable pull rod 71 can be a structural member connected with a screw sleeve and a screw rod, and the tension force of the adjustable pull rod 71 can be adjusted by adjusting the length of the adjustable pull rod 71, so that the feeding box 30 is tightly attached to the side wall of the main screen part 20 under the tension action of the adjustable pull rod 71, and the leakage of materials caused by the gap generated by loose connection is avoided; the movable hanging ring 721 is hung on or separated from the clamping hook 711 by operating the hooking piece 72, so that the switch of the feeding box 30 can be realized, and the operation is simple and convenient.

As a specific structure of the hooking member 72, the hooking member 72 includes a fixing seat 722, a pressing handle 724 and a lock catch 725; wherein, the fixed seat 722 is fixedly connected to the outer wall of the feeding box 30, and the fixed seat 722 is provided with a clamping plate 723; one end of the pressing handle 724 is hinged with the fixed seat 722, the other end extends towards the direction away from the pull rod, and the middle part of the pressing handle 724 is provided with a movable hanging ring 721; the lock 725 is rotatably connected to the middle part of the pressing handle 724 and is engaged with the clamping plate 723.

Lifting the pressing handle 724 can reduce the distance between the movable hanging ring 721 and the clamping hook 711, so that the movable hanging ring 721 can be easily hung on the clamping hook 711, then the pressing handle 724 is pressed reversely, the movable hanging ring 721 can be driven to move in a direction away from the clamping hook 711, so that the adjustable pull rod 71 is tensioned, then the lock catch 725 is clamped with the clamping plate 723, the pressing handle 724 is locked, the tension loosening of the adjustable pull rod 71 caused by free overturning of the pressing handle 724 is avoided, and the connection reliability between the feeding box 30 and the main screen part 20 is ensured.

It should be noted that, in some embodiments, referring to fig. 2, the primary screen portion 10 has two grain discharge openings 11, and the main screen portion 20 is provided with a feeding box 30 below the two grain discharge openings 11. For the large-volume and large-flow combined cleaning screen, the width of each screening layer 21 is large, and in this case, the two feeding boxes 30 are adopted to feed the main screen part 20 at the same time, so that materials entering each screening layer 21 can be more dispersed, and the influence on the screening quality due to the fact that the materials are too concentrated at the feeding end of the screening layer 21 is avoided.

Based on the same inventive concept, as will be appreciated in connection with fig. 1 to 8, an embodiment of the present application further provides a combined cleaning screen, including the above-described main screen feeding structure.

Compared with the prior art, the combined cleaning screen provided by the embodiment adopts the main screen feeding structure, part of the undersize passing through the primary screen can be leaked to the top screen layer 21 of the main screen part 20, the undersize sliding from the lower end edge of the blanking port 121 through the primary screen dripping plate enters the grain discharging port 11 to fall into the feeding box 30, and the undersize flows to the screen layers 21 below the top layer of the main screen part 20 through the feeding channels 301 in the feeding box 30, so that uniform feeding of each screen layer 21 is realized; the feeding box 30 is compact in structure and small in size as an integrated module, and meanwhile, the number of the feeding channels 301 in the feeding box 30 can be reduced by arranging the blanking ports 121 on the primary screening dripping plate, so that the structure of the feeding box 30 can be simplified, the equipment volume is further reduced, and the compactness of the whole machine structure is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The main screen feeding structure is characterized by being used for receiving undersize discharged from the primary screen part and discharging the undersize into the main screen part, wherein the main screen part comprises a plurality of screening layers which are distributed at intervals up and down; a grain discharge port is arranged on one side of the primary screening part; the main screen feeding structure comprises:

The primary screening dripping tray is obliquely arranged in the primary screening part up and down and is used for receiving the undersize products and enabling the undersize products to slide towards the lower end of the primary screening dripping tray, a blanking port is arranged at the lower end of the primary screening dripping tray and is used for sliding the undersize products towards the screening layer on the top layer, and the lower end of the primary screening dripping tray is positioned in a region beside the blanking port and is used for sliding the undersize products towards the grain discharge port;

The feeding box is arranged at the main screen part and is positioned below the grain discharging port, the top end of the feeding box is open and is in sealing connection with the grain discharging port, a plurality of feeding channels are arranged in the feeding box, and each feeding channel is respectively used for guiding undersize to enter each screening layer below the top layer.

2. The main screen feed structure of claim 1, wherein a plurality of L-shaped baffles are provided in the feed box, and the inner cavity of the feed box is divided into a plurality of the feed channels based on each of the L-shaped baffles.

3. The primary screen feed structure of claim 2, wherein the L-shaped partition includes a vertical partition surface and a horizontal partition surface, wherein the horizontal partition surface is inclined up and down and the inclined lower end of the horizontal partition surface is flush with the feed end of the screen layer.

4. The main screen feeding structure according to claim 1, wherein the top end of the feeding box is provided with a U-shaped interface, and the grain discharging port is formed by encircling an open side wall of the primary screen part and a half shell connected to the open side wall; the U-shaped interface is buckled on the half shell, and a first sealing strip is arranged between the U-shaped interface and the half shell.

5. The main screen feed structure of claim 1, wherein a second seal strip is disposed between the feed box and a sidewall of the main screen section, and a third seal strip is disposed between the feed box and each of the screening layers.

6. The main screen feeding structure as set forth in claim 1, wherein one side of said feeding box is hinged to the frame of said main screen portion and the other side is detachably connected to said frame by a plurality of hooking members arranged at intervals up and down.

7. The main screen feed structure of claim 6, wherein the hitch assembly comprises:

one end of the adjustable pull rod is hinged with the frame, and the other end of the adjustable pull rod is provided with a clamping hook;

the hooking piece is arranged on the feeding box and is provided with a movable hanging ring which is suitable for being hooked with the clamping hook.

8. The primary screen feed structure of claim 7, wherein the hooking element comprises:

The fixed seat is fixedly connected to the outer wall of the feeding box, and a clamping plate is arranged on the fixed seat;

One end of the pressing handle is hinged with the fixed seat, the other end of the pressing handle extends towards the direction away from the pull rod, and the middle part of the pressing handle is provided with the movable hanging ring;

The lock catch is rotationally connected to the middle part of the pressing handle and is in hanging fit with the clamping plate.

9. The main screen feed structure of any one of claims 1-8, wherein the primary screen section has two of the discharge openings, and the main screen section is provided with the feed box below both of the discharge openings.

10. A combination cleaning screen comprising a main screen feed structure as claimed in any one of claims 1 to 9.